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package dispatchertls
import (
"net"
"sync"
)
type connSet struct {
mu sync.Mutex
conns map[*trackedConn]struct{}
}
type trackedConn struct {
net.Conn
set *connSet
}
type trackingListener struct {
net.Listener
set *connSet
}
func newConnSet() *connSet {
return &connSet{conns: map[*trackedConn]struct{}{}}
}
func (s *connSet) add(conn *trackedConn) {
s.mu.Lock()
s.conns[conn] = struct{}{}
s.mu.Unlock()
}
func (s *connSet) remove(conn *trackedConn) {
s.mu.Lock()
delete(s.conns, conn)
s.mu.Unlock()
}
func (s *connSet) closeAll() {
s.mu.Lock()
conns := make([]*trackedConn, 0, len(s.conns))
for conn := range s.conns {
conns = append(conns, conn)
}
s.conns = map[*trackedConn]struct{}{}
s.mu.Unlock()
for _, conn := range conns {
_ = conn.Close()
}
}
func (l *trackingListener) Accept() (net.Conn, error) {
conn, err := l.Listener.Accept()
if err != nil {
return nil, err
}
tracked := &trackedConn{Conn: conn, set: l.set}
l.set.add(tracked)
return tracked, nil
}
func (c *trackedConn) Close() error {
c.set.remove(c)
return c.Conn.Close()
}
